Global Warming Web Resources
United States Environmental Protection Agency (EPA)
A very thorough global warming section includes information about the causes of global warming, the impact of climate change on the environment, and what is being done on the national and global level to help.
Inter-Governmental Panel on Climate Change (IPCC)
Established in 1988 by the World Meterological Association (WMO) and the United Nations Environmental Programme, the IPCC works to assess "the scientific, technical, and socio-economic information relevant to understanding the scientific basis of risk of human-induced climate change."
National Oceanic and Atmospheric Administration (NOAA)-
US Department of Commerce
Offers multiple links to papers about national and global climate change.
Pew Center on Global Climate Change
Sponsored by the Pew Charitable Trusts, an independent nonprofit, this site provides a wealth of information on global warming, including both basic and in depth information about policy, economics, and environmental impacts.
World Wildlife Fund (WWF)
WWF, the world's largest privately financed conservation organization, offers basic information about global warming and focuses on what can be done, even as an individual.
Union of Concerned Scientists (UCS)
Founded in 1969 by faculty and students at MIT, UCS is now an independent, nonprofit alliance of scientists who conduct technical studies relating to environmental and other issues. Their website features an entire section on global warming, including climate change in specific regions.